S test 3

Question 0

Come up with the theory that continents have been slowly moving over time

1912

The Continental drift Theory

Answer 0

He used his knowledge of weather and other data to…

This theory was introduced in…

This theory was called…

Question 1

meteorologist

Answer 1

What job did Alfred Wegener have?

Question 2

Pangea is the supercontinent

It existed 200 million years ago

Answer 2

All continents were part of a supercontinent called ______.

The supercontinent existed around ___ million years ago

Question 3

For reasons why scientists thought his theory was false, tap me.

Answer 3

FALSE statements disproving the continental drift theory:

“Continents were to big to move”
“continents were connected by great land bridges at one time”

Question 4

Alfred
Wegener
1960

Answer 4

Scientists didn’t take ______ _______’s ideas seriously until the ____’s

(And now scientists accept this theory)

Question 5

Continental Drift Theory evidence

Answer 5

“puzzle-like fit of the continents”
“Similarities among different rocks on different continents”
“Certain fossils were preserved in rocks of the same age on different continents”
“Plant fossils of several types of trees that grow in temperate
climates have been found in what is now a polar climate”
“Coal beds which usually form near the equator (rainforests), have
Been found in temperate climate zones.(East USA, Europe, and
Siberia)”

Question 6

What direction are continents moving in?

Answer 6

Direction continents move depend on the motion of the tectonic
plate they are part of:

“North and south America seem to be Moving to the west”
“Africa, Europe, Australia, and India seem to be moving northerly”

Question 7

Plates

Answer 7

The Earth’s crust and upper mantle are broken into tectonic ______ that can move

Question 8

The crust is…

The mantle is…

The mantle is made of…

Answer 8

The outermost layer of the Earth

The layer of the of Earth between the core and the crust

Molten rock

Question 9

Temperature

Tectonic

Answer 9

Slow moving currents (caused by ___________ differences in the mantle and core) cause the _______ plates to move along the Earth’s surface

Question 10

Plates carrying a continent are __ km to __ km thick

Plates carrying an ocean are _ km to _ km thick

Answer 10

40 to 48 km (25 to 30 miles)

5 to 8 km (3 to 5 miles)

Question 11

Convergent boundary

Answer 11

When two tectonic plates slam against each other

Question 12

Divergent boundaries

Answer 12

When two tectonic plates move away from each other

Question 13

Transform/fault boundaries

Answer 13

When two plates slide past each other

Question 14

Two plates of similar weight/size share a convergent boundary

Answer 14

Mountains are formed when…

Question 15

Volcanoes

Hotspot

Answer 15

Earthquakes and _________ occur on a plate boundary or a _______

Question 16

Movement is caused in the upper mantle (asthenosphere) because molten rock (magma) is heated in the lower levels of the asthenosphere and rises toward the lithosphere

As the molten rock moves upward to the lithosphere, it
cools and flows along the bottom of the mantle, moving
the tectonic plates

Answer 16

INFORMATION SLIDE

Question 17

Convection

Answer 17

movement of heat energy by a moving fluid is called…

Question 18

Convection current

Answer 18

The path that convection has traveled is…

Question 19

Where did a huge earthquake happen in 1960?

Answer 19

Chile

Question 20

Lithosphere

Answer 20

Upper mantle and crust

Above asthenosphere

Question 21

Asthenosphere

Answer 21

Upper mantle

Below lithosphere

Question 22

Three examples of continents moving apart

Answer 22

South America and Africa
North America and Eurasia
Africa and Eurasia

Question 23

Earthquakes happen when two tectonic plates build up so much pressure that they slip. Volcanoes happen when magma builds up pressure and keeps pushing up. Eventually the magma will reach the surface and the volcano will erupt

Answer 23

How are volcanoes and earthquakes formed?